S
M
T
W
T
F
S
26
69°
42°
27
67°
48°
28
61°
48°
29
51°
41°
30
48°
36°
1
46°
38°
2
49°
38°
3
58°
44°
4
72°
51°
5
56°
39°
6
56°
40°
7
51°
37°
8
55°
40°
9
58°
41°
10
61°
42°
11
61°
42°
12
62°
44°
13
64°
47°
14
65°
47°
15
62°
44°
16
67°
51°
17
69°
50°
18
63°
46°
19
67°
52°
20
65°
52°
21
66°
43°
22
63°
42°
23
62°
43°
24
63°
43°
25
63°
44°
26
64°
44°
27
64°
45°
28
65°
44°
29
65°
46°
30
67°
54°
31
69°
51°
1
68°
50°
2
69°
51°
3
71°
56°
4
73°
56°
5
75°
58°
6
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oakland
Oakland's May 2026 forecast shows daily high temperatures ranging from 49° to 76°, with overnight lows between 37° and 59°. The average high for May is 64° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Oakland. See also: June | July | August.